i don't know if you'd see the keyboard on the desktop, but i bet you'll see it in Audio MIDI setup. i mean, i plug in my USB Midisport 2x2, and it see it, and the Roland keyboard connected...okay, it reports the Roland as an XP-80, when it's actually an old Juno-106 analog, but it saw a keyboard connected (i just have to make my own little device name and pic

)
the HD in the korg...i don't know if X would see that. i guess it would depend on what kind of format the drive is in, but again, this is all speculation.
i think the problem with this whole mLAN thing and getting answers is that 1) there aren't a lot of mLAN devices out there 2) the ones that are out there are pricey 3) no one really has tried them out (probably because of 2)
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